Simulated light curves of SNe Ia and IIP for pairs of images of strongly lensed galaxies behind A1689. Only pairs with time delays shorter than five years are shown. Additional information on different image pairs labeled by, e.g., 1.2 and 1.1 in the top right corner of each sub panel, can be found in Table 3. The dashed line indicates an expected magnitude limit 25.25 (Vega) in F140W.